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Unformatted text preview: homework 03 ALIBHAI, ZAHID 1 Latest unpenalized work: Feb 5 2007 Monday 04:00 (after this date you can not make a perfect score). Work cutoff: Feb 7 2007, 4:00 am. Question 1 part 1 of 1 10 points A ball rolling up a hill has vector velocities vectorv 1 and vectorv 2 at times t 1 and t 2 , respectively, as shown in the figure. v 1 initial v 2 final Which vector diagram below most accu rately depicts the direction of the balls aver age acceleration over the interval? 1. 2. 3. 4. 5. 6. 7. 8. 9. Zero vector. Question 2 part 1 of 2 10 points A truck driver attempting to deliver some furniture travels 6 km east, turns around and travels 2 km west, and then travels 11 km east to his destination. a) What distance has the driver traveled? Answer in units of km. Question 3 part 2 of 2 10 points b) What is the magnitude of the drivers total displacement? Answer in units of km. Question 4 part 1 of 2 10 points A commuter airplane starts from an airport and takes the route shown in the figure. It first flies to city A located at 191 km in a direction 28 north of east. Next, it flies 154 km 17 west of north to city B . Finally, it flies 155 km due west to city C . homework 03 ALIBHAI, ZAHID 2 1 9 1 k m 28 A 1 5 4 k m 17 B 155 km C R C x (km) y (km) 50 100 150 200 50 100 150 200 250 W E S N How far away from the starting point is city C ? Answer in units of km. Question 5 part 2 of 2 10 points What is the direction of the final position vector r , measured from North? Use coun terclockwise as the positive angular direction, between the limits of 180 and +180 . Answer in units of . Question 6 part 1 of 1 10 points A particle undergoes two displacements. The first has a magnitude of 11 m and makes an angle of 73 with the positive x axis....
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This note was uploaded on 10/13/2009 for the course PHY 303K taught by Professor Turner during the Spring '08 term at University of Texas at Austin.
 Spring '08
 Turner
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